If you ever get a chance to take a ride on Justin Bieber’s private plane, make sure to pack your gas mask.

Last week, Bieber’s plane was detained on the tarmac at Teterboro Airport due to a strong odor of marijuana—no weed was found onboard—but according to NBC News the pilots were forced to wear oxygen masks to keep from inhaling the massive amount of pot smoke coming from the cabin.

“The captain of the flight stated that he warned the passengers, including Bieber, on several occasions to stop smoking marijuana,” the official report says. NBC says the pilots were forced to wear their oxygen masks so that “they wouldn’t risk inhaling marijuana and failing a drug test.”

The report also claims that the captain “needed to request that the passengers stop their harassing behavior toward the flight attendant and after several warnings asked the flight attendant to stay with him near the cockpit to avoid any further abuse.”

The passengers, which included the Canadian pop star, his dad and 10 friends, reportedly were “extremely abusive” towards the flight attendant, so much so that she says she will never work another flight for Bieber.

Bieber’s plane was stopped after a customs agent detected “a strong odor of pot,” drug-sniffing dogs were dispatched into the private plane, with the animals detecting marijuana in two pieces of luggage. During the search, Bieber admitted smoking marijuana and drinking alcohol, but stated that he did not have any additional marijuana. Upon further investigation, no weed was found onboard the aircraft.

The members of the flight crew did not file charges against their passengers, which is lucky for Bieber who is already due in court on March 3 following his arrest in Miami on charges of driving under the influence, resisting arrest and driving with an expired license.

Bieber also turned himself into a Toronto police station on assault charges stemming from an encounter with a limousine driver last month in which the pop star allegedly hit the driver repeatedly in the back of the head. He is also facing a possible court date over allegations that he egged his neighbor’s house.